Please be patient.
1) 31-Oct 4:30pm - already end day of Friday, most likely chunk into Pos Malaysia KLIA bin for the weekend.

2) 1-Nov - Pos Malaysia does not work on first Saturday. Nor Sunday.

3) 3-Nov 11:09am - Pos Malaysia just start work today, and you already raise topic. While at the same time, this is just a registered mail. Not a PosLaju/Speedpost type of mail.

4) Departure from inward office of exchange - IIRC, this means no tax and release to Pos KLIA centre already.

5) What is happening now ? Today Pos Malaysia KLIA will pickup and start process. In some cases, Pos Malaysia will assign a different RR number than the one used in Japan. I've packages that change 3-4 RR numbers when it pass through several countries in transit, and only knows it when I see the stickers on the envelope after I receive it.

6) By tonight/tomorrow, it should start goto Pusat Mel in KL/PJ. Then it goes through the process of sorting. Then process of sending to other branches, which may take another day or two. Then sorting again to postman area, then wait postman MC/EL/etc. before start delivery. Remember, this is not PosLaju.

6) Wait a few more (1-7) working days, you will receive your parcels.